Ch.2 - Atoms & ElementsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: GroupNameElements1AAlkali metalsLi, Na, K, Rb, Cs, Fr2AAlkaline earth metalsBe, Mg, Ca, Sr, Ba, Ra6AChalcogensO, S, Se, Te, Po7AHalogensF, Cl, Br, I, At8ANoble gases (or rare gases)He, Ne, Ar, Kr, Xe,

Problem


GroupNameElements
1AAlkali metalsLi, Na, K, Rb, Cs, Fr
2AAlkaline earth metalsBe, Mg, Ca, Sr, Ba, Ra
6AChalcogensO, S, Se, Te, Po
7AHalogensF, Cl, Br, I, At
8ANoble gases (or rare gases)He, Ne, Ar, Kr, Xe, Rn


Names of Some Groups in the Periodic Table


Chlorine is a halogen (Table 2.3). Locate this element in the periodic table.

What is its atomic number?